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Categories

  • Windows Internals
  • Performance/Sizing
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  • Tips and Tools
  • Windows General

Free Tool – List Registry Links (REG_LINK)

Recently I got into a very interesting discussion with my colleague Nicholas Dille on various aspects of Windows x64. One question he brought up was especially intriguing: knowing about registry […]

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by Helge Klein on May 4, 2008
  • Helge's Tools

Windows x64 Part 7: File System & Registry Redirection, Registry Reflection

This is the seventh part of a mini-series on Windows x64, focusing on behind the scene changes in the operating system. In the last article I explained that mixed 32-/64-bit […]

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by Helge Klein on April 20, 2008
  • 64-Bit Windows (x64)

Windows x64 Part 6: COM, DLLs and Processes

This is the sixth part of a mini-series on Windows x64, focusing on behind the scene changes in the operating system. In the last article I discussed how 32-bit applications […]

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by Helge Klein on April 2, 2008
  • 64-Bit Windows (x64)

Windows x64 Part 5: NTVDM, Services, WoW64

This is the fifth part of a mini-series on Windows x64, focusing on behind the scene changes in the operating system. In the last article I explained that the 64-bit […]

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by Helge Klein on March 11, 2008
  • 64-Bit Windows (x64)

Windows x64 Part 4: Code Trees, Drivers

This is the fourth part of a mini-series on Windows x64, focusing on behind the scene changes in the operating system. In the last article I wrote about the changes […]

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by Helge Klein on February 20, 2008
  • 64-Bit Windows (x64)

Windows x64 Part 3: CPUs, AMD64, Intel 64, EM64T, Itanium

This is the third part of a mini-series on Windows x64, focusing on behind the scene changes in the operating system. In the first two articles (here and here) I […]

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by Helge Klein on February 5, 2008
  • 64-Bit Windows (x64)

Windows x64 Part 2: Kernel Memory, /3GB, PTEs, (Non-) Paged Pool

This is the second part of a mini-series on Windows x64, focusing on behind the scene changes in the operating system. In the first article I explained key concepts of […]

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by Helge Klein on January 23, 2008
  • 64-Bit Windows (x64)

Windows x64 Part 1: Virtual Memory

I will start the new year with a small series on Windows x64 in which I will explain why 64-bit computing is not only necessary but inevitable. I will then […]

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by Helge Klein on January 9, 2008
  • 64-Bit Windows (x64)

Why Vista's System Restore is Dangerous and What to do About it

Recently a colleague of mine had a problem: by mistake he had deleted part of the software registry hive (HKLM\Software) of his Vista machine while trying out some code. When […]

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by Helge Klein on December 19, 2007
  • Windows Internals

Another IT Legend

Some time ago I wrote about a misconception so common that it might pass as an IT legend – the confusion of HKU\.Default with the default user’s registry hive. Recently […]

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by Helge Klein on December 11, 2007
  • User Profiles

Group Policy Preferences: Why Windows Server 2008 Will Change the Way You Work

I confess: I like group policies. They are and have always been a great way of managing computer and user settings ever since their conception and introduction with Windows 2000. […]

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by Helge Klein on November 27, 2007
  • Windows General

Free Tool: Refresh the Desktop Programmatically

I recently had the requirement to refresh the Windows desktop after certain changes had been made to Explorer’s registry entries. This seems simple at first: klick on any item on […]

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by Helge Klein on November 22, 2007
  • Helge's Tools

New Blog in Town

My colleague Nicholas Dille has started his own blog. Nicholas is a very clever guy whose opinion I value very much. I have often worked and laughed with him in […]

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by Helge Klein on November 21, 2007
  • Miscellaneous

Why is (Almost) Everybody Wrong About HKU\.Default?

Most technical folks have stumbled across the registry hive HKEY_USERS\.Default at some point. Many of them think they know what it is used for. Interestingly, most who do are wrong. […]

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by Helge Klein on November 19, 2007
  • User Profiles

Soup Up Your Terminal Server: Optimizing Explorer’s Network Performance

Update: The ADM file can now be downloaded here. I recently came across a post in the Windows Server Performance Team’s blog that lists several registry values which can be […]

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by Helge Klein on November 7, 2007
  • Performance/Sizing

Dirquota – Automagically Manage File System Quotas

Did you know that Windows Server contains a file system quota component? “Of course”, you will say. It was introduced with Windows 2000 and is completely useless since it only […]

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by Helge Klein on October 24, 2007
  • Windows General

Undocumented Program Neighborhood Command Line Switches

Nearly every professional working with Citrix Presentation Server knows about Program Neighborhood (PN), and some may even use it frequently. It was first introduced in MetaFrame 1.8 and is used […]

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by Helge Klein on October 16, 2007
  • Citrix/Terminal Services/Remote Desktop Services

Taming Black Holes: Parallel Session Creation

Have you ever tried to log on to a terminal server and, after entering your credentials, been forced to stare at a grey screen for a lengthy period of time […]

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by Helge Klein on October 2, 2007
  • Citrix/Terminal Services/Remote Desktop Services

ClearType Bandwidth Revisited – Testing 32 Bit Color Depth

In an earlier post I wrote about how bandwidth requirements of the RDP protocol are affected by enabling font smoothing (ClearType over RDP version 6) on Windows Server 2008. Jan, […]

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by Helge Klein on September 19, 2007
  • Citrix/Terminal Services/Remote Desktop Services

Programmatically Determining Terminal Server Mode on Windows Server 2008

A question on the terminal services newsgroup brought this topic to my attention: how can be determined programmatically if a Windows Server 2008 system is a terminal server and whether […]

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by Helge Klein on September 12, 2007
  • Citrix/Terminal Services/Remote Desktop Services

Bandwidth Requirements for ClearType over RDP

In an earlier post I wrote about a great technology that finally makes it into terminal services with Windows Server 2008: ClearType or Font Smoothing, as it is sometimes called. […]

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by Helge Klein on August 19, 2007
  • Citrix/Terminal Services/Remote Desktop Services

Windows Server 2008 (R2) Component Posters

[Updated 2009-12-11 for Server 2008 R2] Microsoft has published two visually very appealing posters which depict in great detail important components of its upcoming OS Server 2008. The poster on […]

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by Helge Klein on August 10, 2007
  • Windows General

Windows Server 2008: Architectural Changes Relevant to Terminal Services #2

This post covers a technology developed by Microsoft Research in the late 90s that finally made it into terminal services: ClearType. ClearType As is sometimes the case with technology, it […]

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by Helge Klein on August 3, 2007
  • Citrix/Terminal Services/Remote Desktop Services

Windows Server 2008: Architectural Changes Relevant to Terminal Services #1

I will start this blog with a small series of posts that describe changes to the architecture of Windows Server 2008 that are relevant to Terminal Services.

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by Helge Klein on July 30, 2007
  • Citrix/Terminal Services/Remote Desktop Services
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